title: A genome-screen of a large twin cohort reveals linkage for quantitative ultrasound of the calcaneus to 2q33-37 and 4q12-21.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002111:Calcaneus / Q000000981:diagnostic imaging*; D002889:Chromosomes, Human, Pair 2; D002894:Chromosomes, Human, Pair 4; D015331:Cohort Studies; D005260:Female; D008040:Genetic Linkage; D006801:Humans; D008875:Middle Aged; D040641:Quantitative Trait Loci; D014463:Ultrasonography